28137025

素因数分解:

$5^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:350

約数の個数: 36

約数和(自身を含む): 41164032

約数和(自身を除く): 13027007

約数列:

[1, 5, 7, 25, 35, 49, 103, 175, 223, 245, 515, 721, 1115, 1225, 1561, 2575, 3605, 5047, 5575, 7805, 10927, 18025, 22969, 25235, 39025, 54635, 114845, 126175, 160783, 273175, 574225, 803915, 1125481, 4019575, 5627405, 28137025]

約数ペア:

[(1, 28137025), (5, 5627405), (7, 4019575), (25, 1125481), (35, 803915), (49, 574225), (103, 273175), (175, 160783), (223, 126175), (245, 114845), (515, 54635), (721, 39025), (1115, 25235), (1225, 22969), (1561, 18025), (2575, 10927), (3605, 7805), (5047, 5575)]